Examples of freemarker.template.Template

freemarker.template.Template
A core FreeMarker API that represents a compiled template. Typically, you will use a {@link Configuration} object to instantiate a template.
```
 Configuration cfg = new Configuration(); ... Template myTemplate = cfg.getTemplate("myTemplate.html"); 
```
However, you can also construct a template directly by passing in to the appropriate constructor a java.io.Reader instance that is set to read the raw template text. The compiled template is stored in an an efficient data structure for later use.
To render the template, i.e. to merge it with a data model, and thus produce "cooked" output, call the process method.
Any error messages from exceptions thrown during compilation will be included in the output stream and thrown back to the calling code. To change this behavior, you can install custom exception handlers using {@link Configurable#setTemplateExceptionHandler(TemplateExceptionHandler)} ona Configuration object (for all templates belonging to a configuration) or on a Template object (for a single template).
It's not legal to modify the values of FreeMarker settings: a) while the template is executing; b) if the template object is already accessible from multiple threads. @version $Id: Template.java,v 1.216.2.3 2006/03/10 17:49:02 revusky Exp $

        try {
            if (page.startsWith("component://")) {
                FreeMarkerWorker.renderTemplateAtLocation(page, context, response.getWriter());
            } else {
                // backwards compatibility
                Template template = config.getTemplate(page);
                FreeMarkerWorker.renderTemplate(template, context, response.getWriter());
            }
            response.flushBuffer();
        } catch (TemplateException te) {
            throw new ViewHandlerException("Problems processing Freemarker template", te);

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                    StringWriter outWriter = new StringWriter();
                    Configuration config = new Configuration();
                    config.setObjectWrapper(BeansWrapper.getDefaultInstance());
                    config.setSetting("datetime_format", "yyyy-MM-dd HH:mm:ss.SSS");


                    Template template = new Template("FMImportFilter", templateReader, config);
                    NodeModel nodeModel = NodeModel.wrap(this.rootNodeForTemplate);


                    Map<String, Object> context = FastMap.newInstance();
                    BeansWrapper wrapper = BeansWrapper.getDefaultInstance();
                    TemplateHashModel staticModels = wrapper.getStaticModels();
                    context.put("Static", staticModels);


                    context.put("doc", nodeModel);
                    template.process(context, outWriter);
                    String s = outWriter.toString();
                    if (Debug.verboseOn()) Debug.logVerbose("transformed xml: " + s, module);


                    EntitySaxReader reader = new EntitySaxReader(delegator);
                    reader.setUseTryInsertMethod(this.useTryInsertMethod);

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                return ServiceUtil.returnError(UtilProperties.getMessage(resource, "WebtoolsErrrorReadingTemplateFile", UtilMisc.toMap("filename", fmfilename, "errorString", e.getMessage()), locale));
            }


            StringWriter outWriter = new StringWriter();


            Template template = null;
            try {
                Configuration conf = org.ofbiz.base.util.template.FreeMarkerWorker.getDefaultOfbizConfig();
                template = new Template("FMImportFilter", templateReader, conf);
                Map<String, Object> fmcontext = FastMap.newInstance();


                InputSource ins = url != null ? new InputSource(url.openStream()) : new InputSource(new StringReader(fulltext));
                NodeModel nodeModel;
                try {
                    nodeModel = NodeModel.parse(ins);
                } finally {
                    if (ins.getByteStream() != null) {
                        ins.getByteStream().close();
                    }
                    if (ins.getCharacterStream() != null) {
                        ins.getCharacterStream().close();
                    }
                }
                fmcontext.put("doc", nodeModel);
                BeansWrapper wrapper = BeansWrapper.getDefaultInstance();
                TemplateHashModel staticModels = wrapper.getStaticModels();
                fmcontext.put("Static", staticModels);


                template.process(fmcontext, outWriter);
                fulltext = outWriter.toString();
            } catch (Exception ex) {
                return ServiceUtil.returnError(UtilProperties.getMessage(resource, "WebtoolsErrrorProcessingTemplateFile", UtilMisc.toMap("filename", fmfilename, "errorString", ex.getMessage()), locale));
            }
        }

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    private void executeMacro(Appendable writer, String macro) throws IOException {
        try {
            Environment environment = getEnvironment(writer);
            Reader templateReader = new StringReader(macro);
            // FIXME: I am using a Date as an hack to provide a unique name for the template...
            Template template = new Template((new java.util.Date()).toString(), templateReader, FreeMarkerWorker.getDefaultOfbizConfig());
            templateReader.close();
            environment.include(template);
        } catch (TemplateException e) {
            Debug.logError(e, "Error rendering screen thru ftl macro: " + macro, module);
        } catch (IOException e) {

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     * @param context The context Map
     * @param outWriter The Writer to render to
     * @param useCache try to get template from cache
     */
    public static void renderTemplate(String templateLocation, Map<String, Object> context, Appendable outWriter) throws TemplateException, IOException {
        Template template = getTemplate(templateLocation);
        renderTemplate(template, context, outWriter);
    }

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    /**
     * @deprecated, replaced by {@link #renderTemplateFromString(String templateString, String templateLocation, Map<String, Object> context, Appendable outWriter, boolean useCache)}
     */
    @Deprecated
    public static Environment renderTemplateFromString(String templateString, String templateLocation, Map<String, Object> context, Appendable outWriter) throws TemplateException, IOException {
        Template template = cachedTemplates.get(templateLocation);
        if (template == null) {
            synchronized (cachedTemplates) {
                template = cachedTemplates.get(templateLocation);
                if (template == null) {
                    Reader templateReader = new StringReader(templateString);
                    template = new Template(templateLocation, templateReader, defaultOfbizConfig);
                    templateReader.close();
                    cachedTemplates.put(templateLocation, template);
                }
            }
        }

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        }
        return renderTemplate(template, context, outWriter);
    }


    public static Environment renderTemplateFromString(String templateString, String templateLocation, Map<String, Object> context, Appendable outWriter, boolean useCache) throws TemplateException, IOException {
        Template template = null;
        if (useCache){
            template = cachedTemplates.get(templateLocation);
        }
        if (template == null) {
            if (useCache){
                synchronized (cachedTemplates) {
                    template = cachedTemplates.get(templateLocation);
                    if (template == null) {
                        Reader templateReader = new StringReader(templateString);
                        template = new Template(templateLocation, templateReader, defaultOfbizConfig);
                        templateReader.close();
                        cachedTemplates.put(templateLocation, template);
                    }
                }
            } else {
                Reader templateReader = new StringReader(templateString);
                template = new Template(templateLocation, templateReader, defaultOfbizConfig);
                templateReader.close();
            }
        }


        return renderTemplate(template, context, outWriter);

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    public static Template getTemplate(String templateLocation) throws TemplateException, IOException {
        return getTemplate(templateLocation, cachedTemplates, defaultOfbizConfig);
    }


    public static Template getTemplate(String templateLocation, UtilCache<String, Template> cache, Configuration config) throws TemplateException, IOException {
        Template template = cache.get(templateLocation);
        if (template == null) {
            synchronized (cache) {
                template = cache.get(templateLocation);
                if (template == null) {
                    // only make the reader if we need it, and then close it right after!
                    Reader templateReader = makeReader(templateLocation);
                    template = new Template(templateLocation, templateReader, config);
                    templateReader.close();
                    cache.put(templateLocation, template);
                }
            }
        }

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  public void processString(String template, Writer output) {
  
      try {
        Reader r = new StringReader(template);
      Template t = new Template("unknown", r, freeMarkerEngine);
        
      t.process(getContext(), output);           
      } 
      catch (IOException e) {
          throw new ExporterException("Error while processing template string", e);
      } 
      catch (TemplateException te) {

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      if(rootContext == null) {
        rootContext = "Unknown context";
      }
      
      try {
        Template template = freeMarkerEngine.getTemplate(templateName);
        template.process(getContext(), output);            
        } 
        catch (IOException e) {
            throw new ExporterException("Error while processing " + rootContext + " with template " + templateName, e);
        }
        catch (TemplateException te) {

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